. >>> former california governor arnold schwarzenegger's book hits shelves today. including a number of affairs including the one with his made that resulted in a son. in his interview with cbs's 60 minutes, here's andrew spencer with more. >> arnold schwarzenegger admits in his book and 60 minutes, he had an affair with his co star. happened while he was in a relationship with maria who later became his wife. >> was that the only affair? >> no. but, that's something that's obviously between maria and me. >> she know? >> yeah. >> so it's a recurring issue with you? >> i'm not perfect. >> the former california governor, body builder and movie star has admitted to an affair with his family's housekeeper. he sus septembered he was the father of her son when the boy was around 7 or 8. >> it appeared to me he started looking like me. so that's when i kind of caught it. it was never discussed but put things together here. >> he says shriver confronted him about it. >> she then said hey i think that joseph is your kid. am i off here on this or not? >> and i said you are a